RevisedGRE18道官方三空题

RevisedGRE18道官方三空题
RevisedGRE18道官方三空题

三空题

OG Discrete Question

1.Richard M. Russell said 52 percent of the nation’s growth since the Second World War

had _____ invention. He said, _____ research, the government’s greatest role in assuring continuing innovation is promoting a strong, modern paten t office. “Unless we can ______ original ideas, we will not have invention.” Mr. Russell said. Speculating on the state of innovation over the next century, several inventors agreed that the future lay in giving children the tools to think creatively and the motivation to invent.

2.Statements presented as fact in a patent application are _____ unless a good reason for

doubt is found. The invention has only to be deemed “more likely than not” to work in order to receive initial approval. And, although thousands of patents are challenged in court for other reasons, no incentive exists for anyone to expend effort _____ the science of an erroneous patent. For this reason the endless stream of ____ devices will continue to yield occasional patent.

3.No other contemporary poet’s work has such a well-earned reputation for _____, and

there are few whose moral vision is so imperiously unsparing. Of late, however, the almost belligerent demands of his severe and densely forbidding poetry have taken an improbable turn. This new collection is the poet’s fourth book in six years—an ample output even for poets of sunny disposition, let alone for one of such ____ over the previous 50 years. Yet for all his newfound _____, his poetry is as thorny as ever.

4.Managers who think that strong environmental performance will ____ their company’s

financial performance often ____ claims that systems designed to help them manage environmental concerns are valuable tools. By contrast, managers who perceive environmental performance to be _____ to financial success may view an environmental management system as extraneous. In either situation, and whatever their perceptions, it is a manager’s commitme nt to achieving environmental improvement rather than the mere presence of a system that determines environmental performance.

5.Philosophy, unlike most other subjects, does not try to extend our knowledge by

discovering new information about the world. Instead it tries to deepen our

understanding through _____ what is already closest to us—the experiences, thoughts,

concepts, and activities that make up our lives but that ordinarily escape our notice

precisely because they are so familiar. Philosophy begins by finding _____ the things that are _____.

原ETS官网三空题

6.It is refreshing to read a book about our planet by an author who does not allow facts to

be ____ by politics: well aware of the political disputes about the effects of human activities on climate and biodiversity, this author does not permit them to _____ his comprehensive description of what we know about our biosphere. He emphasizes the enormous gaps in our knowledge, the sparseness of our observations, and the _____, calling attention to the many aspects of planetary evolution that must be better understood before we can accurately diagnose the condition of our planet.

7.Murray, whose show of recent paintings and drawings is her best in many years, has

been eminent hereabouts for a quarter century, although often regarded with _____, but the most _____ of these paintings _____ all doubts.

8.Having displayed his art collection in a vast modernist white space in ______ former

warehouse, Mr. Saatchi has chosen for his new site its polar opposite, a riverside monument to civic pomposity that once housed the local government. There is nothing ______ about the new location: the building’s design is bureaucratic baroque, ______ style that is as declamatory as a task-force report and as self-regarding as a campaign speech.

PRACTICE BOOK 题目

9.That the President manages the economy is an assumption _____ the prevailing wisdom

that dominates electoral politics in the United States. As a result, presidential elections have become referenda on the business cycle, whose fortuitous turnings are _____ the President. Presidents are properly accountable for their executive and legislative performance, and certainly their actions may have profound effects on the economy. But these effects are _____. Unfortunately, modern political campaigns are fought on the untenable premise that Presidents can deliberately produce precise economic results.

10.Room acoustics design criter ia are determined according to the room’s intended use.

Music, for example, is best _____ in spaces that are reverberant, a condition that generally makes speech less _______. Acoustics suitable for both speech and music can sometimes be created in the same space, although the result is never perfect, each having to be ______ to some extent.

11.To the untutored eye the tightly forested Ardennes hills around Sedan look quite ______,

_______place through which to advance a modern army; even with today’s more numerous and better roads and bridges, the woods and the river Meuse form a significant ______.

OG Practice Test

12.The most striking thing about the politician is how often his politics have been (i)____

rather than ideological, as he adapts his political positions at any particular moment to the political realities that constrain him. He does not, however, piously (ii)_____ political principles only to betray them in practice. Rather, he attempts in subtle ways to balance his political self-interest with a (iii)______, viewing himself as an instrument of some

13.What readers most commonly remember about John Stuart Mill’s classic exploration of

the liberty of thought and discussion concerns the danger of (i)_____ : in the absence of challenge, one’s opinions, even when they are correct, grow weak and flabby. Yet Mill had another reason for encouraging the liberty of thought and discussion: the danger of partiality and incompleteness. Since one’s opinions, even under the best circumstances, tend to (ii)_____, and because opinions opposed to one’s own rarely turn out to be completely (iii)_____, it is crucial to supplement one’s opinions with alternative points of

14.Wills argues that certain malarial parasites are especially (i)____ because they have

more recently entered humans than other species and therefore have had (ii)____time to evolve toward (iii)_____. Yet there is no reliable evidence that the most harmful Plasmodium species has been in humans for a shorter time than less harmful species.

PowerPrep 2

15.The question of (i)____ in photography has lately become nontrivial. Prices for vintage

prints(those make by a photographer soon after he or she made the negative so drastically (ii)______ in the 1990s that one of these photographs might fetch a hundred times as much as a nonvintage print of the same image. It was perhaps only a matter of time before someone took advantage of the(iii)_____ to peddle newly created “vintage”

prints for profit.

16.I’ve long anticipated this retrospective of the artist’s work, hoping it would make

(i)______ judgments about him possible, but greater familiarity with his paintings

highlights their inherent (ii)______ and actually makes one’s assessment(iii)______.

17.Higher energy prices would have many (i)_____ effects on society as a whole. Besides

encouraging consumers to be more (ii)______ in their use of gasoline, they would encourage the development of renewable alternative energy sources that are not(iii)______ at current prices.

18.But they pay little attention to the opposite and more treacherous failing: false certainty,

refusing to confess their mistakes and implicitly claiming (i)____ ,thereby embarrassing the nation and undermining the Constitution, which established various mechanisms of self-correction on the premise that even the wisest men are sometimes wrong and need, precisely when they find it most(ii)______, the benefit of(iii)_____process.

答案

1.CEH

2.AFH

3.CDH

4.BDI

5.BEG

6.AEI

7.CEH

8.CEH

9.BEI 10.BEG

11.AEH 12.CDH 13.BDG 14.BEH 15.ADG 16.BEG 17.CFI 18.ADH

三年级上册奥数155道数学题

小学三年级上册奥数题 1、王老师带了8000元钱,买一台电脑用去了6387元,买一台打印机用去986元,还剩多少元? 2、三、四年级同学一共收集树种65千克,三年级同学收集6袋,每袋5千克,四年级心理学收集了多少千克? 3、电视机厂第一天上午生产电视机274台,下午生产196台,如果第三天生产510台,第一天比第二天少生产多少台? 4、家具厂上个月生产单人木床1500张,双人木床1850张,铁床2500张,铁床比木床少生产多少张? 5、手帕厂原计划八月份生产手帕3280打。采用新的生产流水线后,生产的手帕运走了2960打,还剩875打。比原来计划增产多少打? 6、少先队员割草。第一小队割草46千克,第二小队割草54千克,第三小队比第一、二小队割草总数少39千克,第三小队割草多少千克? 7、第一养鸡场养鸡2670只,第二养鸡场比第一养鸡场少养980只,两个养鸡场一共养鸡多少只?

8、食堂九月份烧煤300千克,十月分比九月份节约用煤40千克。两个月共烧煤多少千克? 9、童装厂九月份计划生产童装2060套,结果上半月生产1208套,下半月生产1395套,超过计划多少套? 10、洗衣机厂九月份上半月生产洗衣机845台,下半月生产968台,八月分生产1560台。九月份比八月份多生产多少台?两个月共生产多少台? 11、张大伯家有8袋化肥,每袋重50千克,用去315千克,还剩多少千克? 12、饲养小组养灰兔75只,养的白兔是灰兔的5倍。两种兔共多少只? 13、饲养小组养灰兔75只,是白兔的5倍。这个饲养小组共养兔多少只? 14、一个小组有9个工人,同时加工塑料封面,平均每人加工 105个。把其中的850个装在箱子里,还剩下多少个? 15、商场有白汗衫8箱,每箱560件。有花汗衫2600件。花汗衫比白汗衫少多少件? 16、一箱桔子重15千克,一箱苹果的重量是桔子的2倍。8箱这样的苹果重多少千克?

小学三年级数学竖式计算题

825÷25= 9864÷48= 900÷22= 57×307= 59×198= 689÷34= 1105÷55= 504×32= 358÷25= 538÷33= 986÷29= 13320÷70= 603×36= 812÷57= 860÷30= 647÷27= 786÷94= 689÷21= 783÷58= 45×368= 750×40= 188×25= 2704÷26= 343÷32= 4800÷600= 2700÷300= 986÷29= 25×480= 905÷45= 450×78= 899÷36= 367÷29= 99007÷45= 7403÷68= 864÷57= 562+865= 528+462= 952-653= 965+652 = 562*56= 513*56= 2565-545 = 432-85= 2132+52=

222-15= 5258x552 = 422+52= 4521-655= 424+536= 524-855= 56+578 = 452*54= 854-465= 552+652= 465-52= 4562-565 = 156x56= 6125+46= 446x58 = 125+65 = 123+665= 122-45 = 135-62 = 123+56= 452-125= 589-69 = 623+533= 958-652= 364x59=35×12= 359÷3= 567+284= 602-394= 46×22= 606-208= 603÷7= 198+303= 426÷4= 23×37= 46×58= 326×5= 482÷8= 370÷7= 784-685= 76×15=486÷2= 607÷5= 900-807=

三年级竖式计算题500道

35×12= 359÷3= 567+284= 602-394= 46×22= 606-208= 603÷7= 198+303= 426÷4= 23×37= 46×58= 326×5= 482÷8= 370÷7= 784-685= 76×15=486÷2= 607÷5= 915÷3= 900-807= 560÷4= 458+542= 423÷3= 87×19= 362÷6= 525÷3=254÷5=192÷4=602÷7=839÷9=726÷6=51×16= 78×22=416÷4=823÷8=63×43= 367÷4= 795÷5= 42×53= 15×82= 79×97= 28×32=54×25= 48×61=39×42=168÷8= 370÷5= 640÷7= 19×64= 470÷9= 522÷6= 312÷7= 570÷8= 810÷9= 660÷5= 804÷7= 462÷3=780÷4=729÷9=624÷6=2500+300=156-97= 386+479= 321×12=

125×23=18×250=52×49= 34×54= 106×51=48×34=82×16= 45×93=66×65= 55×18= 75×26= 816÷8=79×29= 43×36= 62×71= 38×44= 865÷5= 984÷8= 437÷3= 4137÷9= ?31×81= 97×22= 57×21= 42×79= 5.5-4.7= 6.6+2.6= 6.4-2.8= 1-0.5= 0.3+0.6= 1.5+0.9= 3.2-1.5= 5.3+2.7= 8+2.18= 2.7+2.3= 10.8-2.8= 7.2-3.2= 14.6+16.74= 10.7-2.8= 15.15-8.8= 1-0.3= 4.8+7.7= 5-1.8= 12.45+3.6= 9.4+6.42= 27×16=39×66=17×51=43×22= 175÷5= 460÷8= 8405÷7= 9160÷4= 3664÷6= 2360÷4= 18×34=19×25=27×32=45×12=33×12= 32×69= 23×31= 142×23= 32×37= 45×12=

三年级上册计算题大全

两位数加减法计算练习(一) 班级学号时间分数 70-8= 97-19= 70-48= 90-18= 18+68= 98-29= 41-23= 71-45= 17+14= 9+48= 39+38= 41-13= 15+16= 66+19= 63-46= 8+28= 78-69= 46+39= 50-21= 77-59= 54-38= 62-36= 61-9= 71-35= 63-56= 46+49= 23+28= 23+38= 16+26= 39+15= ? 70-58= 8+68= 39+48= 63-6= 38+28= 77-59= 63-56= 39+15= 95-69= 27+69= 81-7= 56+38= 49+37= 40-18= 37+56= 29+67= 90-33= 29+44= 73-45= 57+35= 95-59= 48-39= 57+25= 8+57= 81-34= 57+16= 96-57= 59+23= 31-19= 40-28= 47-29= 16+29= 56+28= 64+27= 96-47= 73-36= 81-24= 80-37= 82-44= 16+19= - 48+17= 87-48= 80-7= 33-17= 49+27= 58+13= 27+69= 37+56= 57+35= 95-59= 9+22= 28+26= 29+23= 29+13= 15+77= 35+37= 79+18= 27+38= 27+28= 53-45= 27+48= 75-68= 83-7= 35+27= 60-46= 95-28= 94-18= 95-38= 80-16= 6+25=

小学三年级奥数题100道(整理)

小学三年级奥数练习题 练习1 1、40个梨分给3个班,分给一班20个,其余平均分给二班和三班,二班分到()个。 2、7年前,妈妈的年龄是儿子的6倍,儿子今年12岁,妈妈今年()岁。 3、同学们进行广播操比赛,全班正好排成相等的6行。小红排在第二行,从头数,她站在第5个位置,从后数她站在第3个位置,这个班共有()人。 4、有一串彩珠,按“2红3绿4黄”的顺序依次排列。第600颗是()颜色。 5、用一根绳子绕树三圈余30厘米,如果绕树四圈则差40厘米,树的周长有()厘米,绳子长()厘米。 6、一只蜗牛在12米深的井底向上爬,每小时爬上3米后要滑下2米,这只蜗牛要()小时才能爬出井口。 7、锯一根10米长的木棒,每锯一段要2分钟。如果把这根木棒锯成相等的5段,一共要()分钟。 8、3只猫3天吃了3只老鼠,照这样的效率,9只猫9天能吃()只。 9、┖┴┴┴┴┴┴┴┴┴┚图中共有()条线段。 10、有10把不同的锁,开这10把锁的10把钥匙混在一起了,最多要试()次,才能把这10把锁和钥匙全部配对。 练习2 1、小牛文具店有600本练习本,卖出一些后,还剩4包,每包25本,卖出多少本?3、学校有808个同学,分乘6辆汽车去春游,第一辆车已经接走了128人,如果其余5辆车乘的人数相同,最后一辆车乘了几个同学? 4、学校里组织兴趣小组,合唱队的人数是器乐队人数的3倍,舞蹈队的人数比器乐队少8人,舞蹈队有24人,合唱队有多少人?

5、优优在计算除法时,把除数76写成67,结果得到的商是15还余5。正确的商应该是几? 6、一个书架有3层书,共有270本,从第一层拿出20本放到第二层,从第三层拿出17本放到第二层,这时三层书架中书的本数相等,原来每层各有几本书? 7、箱里放着同样个数的铅笔盒,如果从每只里拿出60个,那么5只箱里剩下铅笔盒的个数的总和等于原来2只箱里个数的和。原来每只箱里有多少个铅笔盒? 8、参加四年级数学竞赛同学中,男同学获奖人数比女同学多2人,女同学获奖人数比男同学人数的一半多2人,男女同学各有多少人获奖? 9、两块同样长的布,第一块用去32米,第二块用去20米,结果所余的米数第二块是第一块的3倍。两块布原来各长多少米? 10、一个正方形,被分成5个相等的长方形,每个长方形的周长是60厘米,正方形的周长是多少厘米?练习3 1、从10000里面连续减25,减多少次差是0? 2、在一道没有余数的除法算式里,被除数(不为零)加上除数和商的积,得到的和,除以被除数,所得的商是多少? 3、明明和花花用同一个数做除法,明明用12去除,花花用15去除。明明除得商是32余数是6,花花 4、三棵树上停着24只鸟。如果从第一棵树上飞4只鸟到第二棵树上去,再从第二棵树飞5只鸟到第三树上去,那么三棵树上的小鸟的只数都相等,第二棵树上原有几只? 5、两袋糖,一袋是84粒,一袋是20粒,每次从多的一袋里拿出8粒糖放到少的一袋里去,拿几次才能使两袋糖的粒数同样多。 6、小强、小清、小玲、小红四人中,小强不是最矮的,小红不是最高的,但比小强高,小玲不比大家高。 请按从高到矮的顺序,把名子写出来。

(完整版)小学三年级数学计算题专项练习题

人教版小学数学第六册计算复习题班别姓名成绩 比赛时间:40分钟满分:100分 挑战计算极限,争当计算明星!加油! 3×10= 80×40= 18×5= 40×60=30÷10= 13×4= 25×20= 160×4=300÷5= 720÷9= 16×6= 720÷0=180÷20= 0÷90= 10×40= 12×50=85÷5= 57÷3= 0+8= 32×30=70÷5= 25×4= 15×6= 630÷9=450÷5= 12×40= 240÷6= 16×60=84÷42= 600-50= 500×3= 0×930=27×30= 84÷12= 420÷3= 910÷3=91-59= 11×70= 1000÷5= 75÷15=320-180= 30×40= 40+580= 560÷4= 95÷1= 480+90= 510÷7= 200÷4=72÷4=8000÷2= 102+20= 4000÷50=125-25×2= 50×0×8= 75+25÷5= 32÷47×12=45+55÷5= 70×(40-32)= 90÷5×3= 10÷10×30=6×(103-98)=7+3×0=51-4×6= 420÷2×8= 750-(70+80)=300÷2÷5= 人教版小学数学第六册计算复习题班别姓名成绩

二、笔算。(乘法不用验算,除法要验算) 54×63= 25×38= 36×19= 774÷8=508÷2= 370÷5= 19×47= 900÷5=23×34= 392÷4= 360×5= 32×68=203÷9= 63×36= 26×38= 770÷5=696÷2= 882÷4= 809÷8= 56×79=64×28= 820÷3= 630÷6= 458÷4= 4+0.6= 7.3-2.9= 10-0.7= 8.2-5=

100道三年级数学小数点加减法练习题

100道三年级数学小数点加减法练习题三年级数据小数点加减法练习题 班级: 姓名: 日期: 8.6,3.9= 5.5,4.7= 8.4,2.8, 9.4,8.7, 12.8,4.7, 9.4,5.5, 3.6,3.7, 4.4,2.8, 7.5,4.7, 4.7,2.9, 5.3,3.8, 5.6,8.8, 8.3,4.7, 2.6,4.8, 6.4,4.5, 4.7,4.9, 5.5,1.8, 1.7,9.5, 8.7,4.5, 7.6,2.8, 1 1.7,5.9, 9.8,5.9, 5.8,1.9, 4.3,1.9, 3.6,3.8, 9.4,3.6, 3.6,6.8, 5.6, 4.7, 6.5,5.7, 4.7,1.8, 9.4,3.8, 8.4,3.7, 2.7,6.7, 9.5,7.9, 3.8,2.7, 3.8, 4.5, 3.6,5.8, 5.7,3.4, 8.4,2.8, 3.7,6.8, 2 2.7+1 3.1= 32.4-10.2= 7.32+1.47= 1.46+0.32= 6.3+0.6= 6.5-3.4= 12.05-0.79= 10-0.73= 2.74+7.26= 78.5-25.65= 12.8+26.5= 4.3+2.3= 5.2-1.4= 11.8+3.7= 10-2.8= 7.6+5.8= 3 .2+2.5= 5.8+16.47= 23-9.53= 41.2-17.64= 3 2.38+4.1= 1 3.9- 4.85= 3.9+1.8= 2.62+ 5.9= 4.95+6.05= 7.45+ 5.95= 3.14+5.72= 4.8-2.8=

三年级竖式计算题大全完整版

三年级竖式计算题大全集团标准化办公室:[VV986T-J682P28-JP266L8-68PNN]

606-208=63÷7=1985+303=123×7=46÷4=46×58=326×5=48÷8=37÷7=784-685=764×5=67÷5=56÷ 4=458+542=42÷3=87×9=497-299=2008-1279=472+1028=1233+232=2340-123=4578-2312=324×2=44÷3=2341+123=49÷6=63÷7=7020×8=334-123=546+1230=998×9=188+119=2000-1098=8024- 1506=9243+7853=378×7= 5×307=7000-3505=753×6=2345-1123=438+741=71÷8=38+1279=233+938=378+427=2500+300=156-97=386+479=321×2=5364+132=3456-789=234-123=1123-234=3451+123=1234×7=23÷2=1232×4=2134-123=2010+2311=44÷5=234-123=678+123=345+123=233×6=1123-234=234×5=123+213=546-378=123×8=2345-1239=234+222=67÷8= 1234-234=567+145=678×9=7890-6778=1234-567=678+243=7890-4563=56÷7=4567-890=678+89=34÷6=2389-986=1235×5=234+789=5683-3422=135×9=3452-334=2345×7=66÷3=3466-784=2345- 123=456+1267=475+553=3456×1=3567-234=67÷7=4567-2345=568+1221=3455-232=664+345=355×3=3567-323=2345-345=678+344=4566+342=78÷3= 578-323=4567×8=456+456=345-45=3458-345=345×6=548+123=34÷3=2345+124=346-231=568-324=453×9=1344+1233=458-123=4566-3213=567×6=3545-232=56÷6=45÷9=453+342=2345-243=345×2=645×5=2435+100=234-34=77÷1=3454-232=1232+2123=678+253=1235-343=3456-2313=453× 6=235-123=568×6=45÷4=356+3533=

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1、4)1(2=-x 2、5)1(10=-x 3、95)3(+=--x x 4、)12(1)2(3--=+-x x x 5、)15(2)2(5-=+x x 6、)4(3)2()1(2x x x -=+-- 7、1)1(234+-=+x x 8、x x x 31)1(2)1(-=--+ 9、)1(3)14(6)2(2x x x -=--- 10、)1(9)15(3)2(4x x x -=--- 11、)12(3)32(21+-=+-x x 12、x x x 31)1(2)1(-=--+ 13、)9(76)20(34x x x x --=-- 14、)3()2(2+-=-x x 15、)1(72)4(2--=+-x x x 16、)43(23)165(2--=+-x x x 17、)12(41)2(3--=+--x x x 18、)4(12)2(24+-=-+x x x 19、)1(9)14(3)2(2x x x -=--- 20、)1(9)14(3)2(2y y y -=--+ 21、)9(76)20(34x x x x --=-- 22、17}20]8)15(4[3{2=----x 23、2)]}4(8[2{3]5)4(3[2----=-+--x x x x x x 24、)1(32 )1(2121-=??????--x x x 25、1122(1)(1)223 x x x x ??---=-????

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6.5+4.7= 1.2-0.3= 4.6+2.4= 3.8+6.6= 238÷6≈ 876÷3≈ 417÷6≈ 753÷5≈ 89×30≈ 32×48≈ 43×22≈ 52×68≈ 890÷9≈ 459÷50≈ 417÷60≈ 351÷5≈ 65×11≈ 76×11≈ 27×19≈ 45×19≈ 53×21≈ 84×21≈ 38×21≈ 35×21≈ 439+46×7= 248÷4×18= 67×(96÷6)= 25×17-120= (450-175)÷5= 268+29×65= 315-345÷3= 574÷(125 118)= 948-13×52= 17×36÷3= 560-12×24= 375÷5×24= 54×63= 25×38= 370÷5= 774÷8= 508÷2= 36×19= 19×47= 900÷5= 23×34= 392÷4= 360×5= 809÷8= 203÷9= 63×36= 26×38= 770÷5= 696÷2= 882÷4= 32×68= 56×79= 64×28= 820÷3= 630÷6= 18×26= 4+0.6= 7.3-2.9= 10-0.7= 8.2-5= 6.5+4.7= 1.2-0.3= 4.6+2.4= 3.8+6.6= 14×53= 15×48= 470÷5= 736÷8= 548÷2= 36×24= 26×57= 420÷5= 54×34= 340÷4= 340×5= 408÷8= 406÷9= 52×36= 24×42= 440÷5= 626÷2= 212÷4= 31×68= 76×79= 64×45= 420÷3= 606÷6= 48×26=

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三年级数据小数点加减法练习题 班级:姓名:日期: 8.6—3.9= 5.5 —4.7= 8.4—2.8=9.4 + 8.7= 12.8+4.7=9.4 —5.5= 3.6 + 3.7= 4.4—2.8 = 7.5 —4.7= 4.7 + 2.9= 5.3—3.8= 5.6 + 8.8= 8.3 —4.7= 2.6 + 4.8= 6.4—4.5= 4.7 + 4.9= 5.5—1.8= 1.7 + 9.5=8.7—4.5=7.6 + 2.8=

1.7 + 5.9=9.8-5.9= 5.8+ 1.9= 4.3-1.9= 3.6 + 3.8=9.4-3.6= 3.6+ 6.8= 5.6+ 4.7= 6.5-5.7= 4.7+ 1.8=9.4-3.8=8.4-3.7= 2.7+ 6.7=9.5-7.9= 3.8+ 2.7= 3.8+ 4.5= 3.6+ 5.8= 5.7-3.4=8.4-2.8= 3.7+ 6.8=

2.7+1 3.1= 6.3+0.6= 2.74+7.26= 32.4-10.2= 7.32+1.47= 1.46+0.32= 6.5-3.4= 12.05-0.79= 10-0.73= 78.5-25.65= 12.8+26.5= 4.3+2.3= 5.2-1.4= 11.8+3.7= 10-2.8= 7.6+5.8= 3 .2+2.5= 5.8+16.47= 23-9.53= 41.2-17.64=

2.38+4.1= 1 3.9- 4.85= 3.9+1.8= 2.62+ 5.9= 4.95+6.05= 7.45+ 5.95= 3.14+5.72= 4.8-2.8= 1.3+ 2.5= 3.11+2.22= 26.2-13.1= 12.3+11.2= 35.8-13.3= 1.45-0.4= 25.2-21.6= 1.45+0.4= 3.16+0.23= 51.5-26.5= 45.2-33.4= 38-33.4=

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